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If xy represents a positive two-digit number, where x and y [#permalink]

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15 Apr 2013, 15:25

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Difficulty:

35% (medium)

Question Stats:

63%(00:46) correct 37%(00:46) wrong based on 268 sessions

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If xy represents a positive two-digit number, where x and y are single digit integers, which of the following CANNOT be true?

A. x + y = 9B. xy = 9C. x – y = 9D. y – x = 9E. x/y = 9

Here is a problem from a practice test. Can someone explain how the test taker is supposed to know that "If xy represents a positive two-digit number" does NOT mean that X times Y represents a positive two-digit number? Ex. The questions means that 5 &4 means 54 not 5x4=20. This is an easy question once you get passed this but I was tricked and thought it meant multiplication which led me down the wrong road. I know even with my misunderstanding of the given that you can come up with the answer anyway, but I know there is an issue with my understand of the wording and I hope to not make careless mistakes like this again. If someone could shed some light on this issue it would be much appreciated!!!!!!! Is it represents vs. equals?

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If xy represents a positive two-digit number, where x and y are single digit integers, which of the following CANNOT be true?

A. x + y = 9B. xy = 9C. x – y = 9D. y – x = 9E. x/y = 9

Here is a problem from a practice test. Can someone explain how the test taker is supposed to know that "If xy represents a positive two-digit number" does NOT mean that X times Y represents a positive two-digit number? Ex. The questions means that 5 &4 means 54 not 5x4=20. This is an easy question once you get passed this but I was tricked and thought it meant multiplication which led me down the wrong road. I know even with my misunderstanding of the given that you can come up with the answer anyway, but I know there is an issue with my understand of the wording and I hope to not make careless mistakes like this again. If someone could shed some light on this issue it would be much appreciated!!!!!!! Is it represents vs. equals?

I agree that it could have been written in a better way, though represents and digit should push to the right direction.
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